Cherifa Ben Salha

collaborators

2 papers

math.CO2023

Irreducible pairings and indecomposable tournaments

Houmem Belkhechine, Cherifa Ben Salha, Rim Romdhane

We only consider finite structures. With every totally ordered set $V$ and a subset $P$ of $(2 V)$ , we associate the underlying tournament $Inv (V, P)$ obta…

math.CO2021

Making a tournament indecomposable by one subtournament-reversal operation

Houmem Belkhechine, Cherifa Ben Salha

Given a tournament $T$ , a module of $T$ is a subset $M$ of $V (T)$ such that for $x, y \in M$ and $v \in V (T) ∖ M$ , $(v, x) \in A (T)$ if and only if $(v, y) \in A (T)$ . The trivial…